<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <div class="container">
    <div class="top">你好，后台管理</div>
    <div class="left">
      <ul>
        <li>
          <a href="/admin/welcome" target="main">首页</a>
        </li>
        <li>
          <a href="/admin/users" target="main">用户管理</a>
        </li>
        <li>
          <a href="/admin/logout" target="_top">退出系统</a>
        </li>
      </ul>
    </div>
    <div class='main'>
      <iframe src="/admin/welcome" name="main" frameborder="0" width="100%" height="600"></iframe>
    </div>
  </div>
</body>

</html>